Question

The nth term of a sequence is $u_{n} =3n - 6$
i) find the position of the number 45 in this sequence

Answer 1

Answer:

given ,Un = 3n-6

now A.T.Q.

Un= 45

3n-6=45

3n=45+6

3n=51

n=51÷3. or 51/3

n=17. Ans